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[thirdparty/binutils-gdb.git] / binutils / objdump.c
1 /* objdump.c -- dump information about an object file.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004
4 Free Software Foundation, Inc.
5
6 This file is part of GNU Binutils.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21
22 /* Objdump overview.
23
24 Objdump displays information about one or more object files, either on
25 their own, or inside libraries. It is commonly used as a disassembler,
26 but it can also display information about file headers, symbol tables,
27 relocations, debugging directives and more.
28
29 The flow of execution is as follows:
30
31 1. Command line arguments are checked for control switches and the
32 information to be displayed is selected.
33
34 2. Any remaining arguments are assumed to be object files, and they are
35 processed in order by display_bfd(). If the file is an archive each
36 of its elements is processed in turn.
37
38 3. The file's target architecture and binary file format are determined
39 by bfd_check_format(). If they are recognised, then dump_bfd() is
40 called.
41
42 4. dump_bfd() in turn calls separate functions to display the requested
43 item(s) of information(s). For example disassemble_data() is called if
44 a disassembly has been requested.
45
46 When disassembling the code loops through blocks of instructions bounded
47 by symbols, calling disassemble_bytes() on each block. The actual
48 disassembling is done by the libopcodes library, via a function pointer
49 supplied by the disassembler() function. */
50
51 #include "bfd.h"
52 #include "bfdver.h"
53 #include "progress.h"
54 #include "bucomm.h"
55 #include "budemang.h"
56 #include "getopt.h"
57 #include "safe-ctype.h"
58 #include "dis-asm.h"
59 #include "libiberty.h"
60 #include "demangle.h"
61 #include "debug.h"
62 #include "budbg.h"
63
64 /* Internal headers for the ELF .stab-dump code - sorry. */
65 #define BYTES_IN_WORD 32
66 #include "aout/aout64.h"
67
68 #ifdef NEED_DECLARATION_FPRINTF
69 /* This is needed by init_disassemble_info(). */
70 extern int fprintf (FILE *, const char *, ...);
71 #endif
72
73 /* Exit status. */
74 static int exit_status = 0;
75
76 static char *default_target = NULL; /* Default at runtime. */
77
78 /* The following variables are set based on arguments passed on the
79 command line. */
80 static int show_version = 0; /* Show the version number. */
81 static int dump_section_contents; /* -s */
82 static int dump_section_headers; /* -h */
83 static bfd_boolean dump_file_header; /* -f */
84 static int dump_symtab; /* -t */
85 static int dump_dynamic_symtab; /* -T */
86 static int dump_reloc_info; /* -r */
87 static int dump_dynamic_reloc_info; /* -R */
88 static int dump_ar_hdrs; /* -a */
89 static int dump_private_headers; /* -p */
90 static int prefix_addresses; /* --prefix-addresses */
91 static int with_line_numbers; /* -l */
92 static bfd_boolean with_source_code; /* -S */
93 static int show_raw_insn; /* --show-raw-insn */
94 static int dump_stab_section_info; /* --stabs */
95 static int do_demangle; /* -C, --demangle */
96 static bfd_boolean disassemble; /* -d */
97 static bfd_boolean disassemble_all; /* -D */
98 static int disassemble_zeroes; /* --disassemble-zeroes */
99 static bfd_boolean formats_info; /* -i */
100 static int wide_output; /* -w */
101 static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
102 static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
103 static int dump_debugging; /* --debugging */
104 static int dump_debugging_tags; /* --debugging-tags */
105 static int dump_special_syms = 0; /* --special-syms */
106 static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
107 static int file_start_context = 0; /* --file-start-context */
108
109 /* Pointer to an array of section names provided by
110 one or more "-j secname" command line options. */
111 static char **only;
112 /* The total number of slots in the only[] array. */
113 static size_t only_size = 0;
114 /* The number of occupied slots in the only[] array. */
115 static size_t only_used = 0;
116
117 /* Variables for handling include file path table. */
118 static const char **include_paths;
119 static int include_path_count;
120
121 /* Extra info to pass to the section disassembler and address printing
122 function. */
123 struct objdump_disasm_info
124 {
125 bfd * abfd;
126 asection * sec;
127 bfd_boolean require_sec;
128 arelent ** dynrelbuf;
129 long dynrelcount;
130 disassembler_ftype disassemble_fn;
131 };
132
133 /* Architecture to disassemble for, or default if NULL. */
134 static char *machine = NULL;
135
136 /* Target specific options to the disassembler. */
137 static char *disassembler_options = NULL;
138
139 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
140 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
141
142 /* The symbol table. */
143 static asymbol **syms;
144
145 /* Number of symbols in `syms'. */
146 static long symcount = 0;
147
148 /* The sorted symbol table. */
149 static asymbol **sorted_syms;
150
151 /* Number of symbols in `sorted_syms'. */
152 static long sorted_symcount = 0;
153
154 /* The dynamic symbol table. */
155 static asymbol **dynsyms;
156
157 /* The synthetic symbol table. */
158 static asymbol *synthsyms;
159 static long synthcount = 0;
160
161 /* Number of symbols in `dynsyms'. */
162 static long dynsymcount = 0;
163
164 static bfd_byte *stabs;
165 static bfd_size_type stab_size;
166
167 static char *strtab;
168 static bfd_size_type stabstr_size;
169 \f
170 static void
171 usage (FILE *stream, int status)
172 {
173 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
174 fprintf (stream, _(" Display information from object <file(s)>.\n"));
175 fprintf (stream, _(" At least one of the following switches must be given:\n"));
176 fprintf (stream, _("\
177 -a, --archive-headers Display archive header information\n\
178 -f, --file-headers Display the contents of the overall file header\n\
179 -p, --private-headers Display object format specific file header contents\n\
180 -h, --[section-]headers Display the contents of the section headers\n\
181 -x, --all-headers Display the contents of all headers\n\
182 -d, --disassemble Display assembler contents of executable sections\n\
183 -D, --disassemble-all Display assembler contents of all sections\n\
184 -S, --source Intermix source code with disassembly\n\
185 -s, --full-contents Display the full contents of all sections requested\n\
186 -g, --debugging Display debug information in object file\n\
187 -e, --debugging-tags Display debug information using ctags style\n\
188 -G, --stabs Display (in raw form) any STABS info in the file\n\
189 -t, --syms Display the contents of the symbol table(s)\n\
190 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
191 -r, --reloc Display the relocation entries in the file\n\
192 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
193 -v, --version Display this program's version number\n\
194 -i, --info List object formats and architectures supported\n\
195 -H, --help Display this information\n\
196 "));
197 if (status != 2)
198 {
199 fprintf (stream, _("\n The following switches are optional:\n"));
200 fprintf (stream, _("\
201 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
202 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
203 -j, --section=NAME Only display information for section NAME\n\
204 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
205 -EB --endian=big Assume big endian format when disassembling\n\
206 -EL --endian=little Assume little endian format when disassembling\n\
207 --file-start-context Include context from start of file (with -S)\n\
208 -I, --include=DIR Add DIR to search list for source files\n\
209 -l, --line-numbers Include line numbers and filenames in output\n\
210 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
211 The STYLE, if specified, can be `auto', `gnu',\n\
212 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
213 or `gnat'\n\
214 -w, --wide Format output for more than 80 columns\n\
215 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
216 --start-address=ADDR Only process data whose address is >= ADDR\n\
217 --stop-address=ADDR Only process data whose address is <= ADDR\n\
218 --prefix-addresses Print complete address alongside disassembly\n\
219 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
220 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
221 --special-syms Include special symbols in symbol dumps\n\
222 \n"));
223 list_supported_targets (program_name, stream);
224 list_supported_architectures (program_name, stream);
225
226 disassembler_usage (stream);
227 }
228 if (status == 0)
229 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
230 exit (status);
231 }
232
233 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
234 enum option_values
235 {
236 OPTION_ENDIAN=150,
237 OPTION_START_ADDRESS,
238 OPTION_STOP_ADDRESS,
239 OPTION_ADJUST_VMA
240 };
241
242 static struct option long_options[]=
243 {
244 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
245 {"all-headers", no_argument, NULL, 'x'},
246 {"private-headers", no_argument, NULL, 'p'},
247 {"architecture", required_argument, NULL, 'm'},
248 {"archive-headers", no_argument, NULL, 'a'},
249 {"debugging", no_argument, NULL, 'g'},
250 {"debugging-tags", no_argument, NULL, 'e'},
251 {"demangle", optional_argument, NULL, 'C'},
252 {"disassemble", no_argument, NULL, 'd'},
253 {"disassemble-all", no_argument, NULL, 'D'},
254 {"disassembler-options", required_argument, NULL, 'M'},
255 {"disassemble-zeroes", no_argument, NULL, 'z'},
256 {"dynamic-reloc", no_argument, NULL, 'R'},
257 {"dynamic-syms", no_argument, NULL, 'T'},
258 {"endian", required_argument, NULL, OPTION_ENDIAN},
259 {"file-headers", no_argument, NULL, 'f'},
260 {"file-start-context", no_argument, &file_start_context, 1},
261 {"full-contents", no_argument, NULL, 's'},
262 {"headers", no_argument, NULL, 'h'},
263 {"help", no_argument, NULL, 'H'},
264 {"info", no_argument, NULL, 'i'},
265 {"line-numbers", no_argument, NULL, 'l'},
266 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
267 {"prefix-addresses", no_argument, &prefix_addresses, 1},
268 {"reloc", no_argument, NULL, 'r'},
269 {"section", required_argument, NULL, 'j'},
270 {"section-headers", no_argument, NULL, 'h'},
271 {"show-raw-insn", no_argument, &show_raw_insn, 1},
272 {"source", no_argument, NULL, 'S'},
273 {"special-syms", no_argument, &dump_special_syms, 1},
274 {"include", required_argument, NULL, 'I'},
275 {"stabs", no_argument, NULL, 'G'},
276 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
277 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
278 {"syms", no_argument, NULL, 't'},
279 {"target", required_argument, NULL, 'b'},
280 {"version", no_argument, NULL, 'V'},
281 {"wide", no_argument, NULL, 'w'},
282 {0, no_argument, 0, 0}
283 };
284 \f
285 static void
286 nonfatal (const char *msg)
287 {
288 bfd_nonfatal (msg);
289 exit_status = 1;
290 }
291 \f
292 static void
293 dump_section_header (bfd *abfd ATTRIBUTE_UNUSED, asection *section,
294 void *ignored ATTRIBUTE_UNUSED)
295 {
296 char *comma = "";
297 unsigned int opb = bfd_octets_per_byte (abfd);
298
299 printf ("%3d %-13s %08lx ", section->index,
300 bfd_get_section_name (abfd, section),
301 (unsigned long) bfd_section_size (abfd, section) / opb);
302 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
303 printf (" ");
304 bfd_printf_vma (abfd, section->lma);
305 printf (" %08lx 2**%u", (unsigned long) section->filepos,
306 bfd_get_section_alignment (abfd, section));
307 if (! wide_output)
308 printf ("\n ");
309 printf (" ");
310
311 #define PF(x, y) \
312 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
313
314 PF (SEC_HAS_CONTENTS, "CONTENTS");
315 PF (SEC_ALLOC, "ALLOC");
316 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
317 PF (SEC_LOAD, "LOAD");
318 PF (SEC_RELOC, "RELOC");
319 PF (SEC_READONLY, "READONLY");
320 PF (SEC_CODE, "CODE");
321 PF (SEC_DATA, "DATA");
322 PF (SEC_ROM, "ROM");
323 PF (SEC_DEBUGGING, "DEBUGGING");
324 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
325 PF (SEC_EXCLUDE, "EXCLUDE");
326 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
327 PF (SEC_BLOCK, "BLOCK");
328 PF (SEC_CLINK, "CLINK");
329 PF (SEC_SMALL_DATA, "SMALL_DATA");
330 PF (SEC_SHARED, "SHARED");
331 PF (SEC_ARCH_BIT_0, "ARCH_BIT_0");
332 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
333
334 if ((section->flags & SEC_LINK_ONCE) != 0)
335 {
336 const char *ls;
337 struct coff_comdat_info *comdat;
338
339 switch (section->flags & SEC_LINK_DUPLICATES)
340 {
341 default:
342 abort ();
343 case SEC_LINK_DUPLICATES_DISCARD:
344 ls = "LINK_ONCE_DISCARD";
345 break;
346 case SEC_LINK_DUPLICATES_ONE_ONLY:
347 ls = "LINK_ONCE_ONE_ONLY";
348 break;
349 case SEC_LINK_DUPLICATES_SAME_SIZE:
350 ls = "LINK_ONCE_SAME_SIZE";
351 break;
352 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
353 ls = "LINK_ONCE_SAME_CONTENTS";
354 break;
355 }
356 printf ("%s%s", comma, ls);
357
358 comdat = bfd_coff_get_comdat_section (abfd, section);
359 if (comdat != NULL)
360 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
361
362 comma = ", ";
363 }
364
365 printf ("\n");
366 #undef PF
367 }
368
369 static void
370 dump_headers (bfd *abfd)
371 {
372 printf (_("Sections:\n"));
373
374 #ifndef BFD64
375 printf (_("Idx Name Size VMA LMA File off Algn"));
376 #else
377 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
378 if (bfd_get_arch_size (abfd) == 32)
379 printf (_("Idx Name Size VMA LMA File off Algn"));
380 else
381 printf (_("Idx Name Size VMA LMA File off Algn"));
382 #endif
383
384 if (wide_output)
385 printf (_(" Flags"));
386 if (abfd->flags & HAS_LOAD_PAGE)
387 printf (_(" Pg"));
388 printf ("\n");
389
390 bfd_map_over_sections (abfd, dump_section_header, NULL);
391 }
392 \f
393 static asymbol **
394 slurp_symtab (bfd *abfd)
395 {
396 asymbol **sy = NULL;
397 long storage;
398
399 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
400 {
401 symcount = 0;
402 return NULL;
403 }
404
405 storage = bfd_get_symtab_upper_bound (abfd);
406 if (storage < 0)
407 bfd_fatal (bfd_get_filename (abfd));
408 if (storage)
409 sy = xmalloc (storage);
410
411 symcount = bfd_canonicalize_symtab (abfd, sy);
412 if (symcount < 0)
413 bfd_fatal (bfd_get_filename (abfd));
414 return sy;
415 }
416
417 /* Read in the dynamic symbols. */
418
419 static asymbol **
420 slurp_dynamic_symtab (bfd *abfd)
421 {
422 asymbol **sy = NULL;
423 long storage;
424
425 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
426 if (storage < 0)
427 {
428 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
429 {
430 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
431 dynsymcount = 0;
432 return NULL;
433 }
434
435 bfd_fatal (bfd_get_filename (abfd));
436 }
437 if (storage)
438 sy = xmalloc (storage);
439
440 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
441 if (dynsymcount < 0)
442 bfd_fatal (bfd_get_filename (abfd));
443 return sy;
444 }
445
446 /* Filter out (in place) symbols that are useless for disassembly.
447 COUNT is the number of elements in SYMBOLS.
448 Return the number of useful symbols. */
449
450 static long
451 remove_useless_symbols (asymbol **symbols, long count)
452 {
453 asymbol **in_ptr = symbols, **out_ptr = symbols;
454
455 while (--count >= 0)
456 {
457 asymbol *sym = *in_ptr++;
458
459 if (sym->name == NULL || sym->name[0] == '\0')
460 continue;
461 if (sym->flags & (BSF_DEBUGGING))
462 continue;
463 if (bfd_is_und_section (sym->section)
464 || bfd_is_com_section (sym->section))
465 continue;
466
467 *out_ptr++ = sym;
468 }
469 return out_ptr - symbols;
470 }
471
472 /* Sort symbols into value order. */
473
474 static int
475 compare_symbols (const void *ap, const void *bp)
476 {
477 const asymbol *a = * (const asymbol **) ap;
478 const asymbol *b = * (const asymbol **) bp;
479 const char *an;
480 const char *bn;
481 size_t anl;
482 size_t bnl;
483 bfd_boolean af;
484 bfd_boolean bf;
485 flagword aflags;
486 flagword bflags;
487
488 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
489 return 1;
490 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
491 return -1;
492
493 if (a->section > b->section)
494 return 1;
495 else if (a->section < b->section)
496 return -1;
497
498 an = bfd_asymbol_name (a);
499 bn = bfd_asymbol_name (b);
500 anl = strlen (an);
501 bnl = strlen (bn);
502
503 /* The symbols gnu_compiled and gcc2_compiled convey no real
504 information, so put them after other symbols with the same value. */
505 af = (strstr (an, "gnu_compiled") != NULL
506 || strstr (an, "gcc2_compiled") != NULL);
507 bf = (strstr (bn, "gnu_compiled") != NULL
508 || strstr (bn, "gcc2_compiled") != NULL);
509
510 if (af && ! bf)
511 return 1;
512 if (! af && bf)
513 return -1;
514
515 /* We use a heuristic for the file name, to try to sort it after
516 more useful symbols. It may not work on non Unix systems, but it
517 doesn't really matter; the only difference is precisely which
518 symbol names get printed. */
519
520 #define file_symbol(s, sn, snl) \
521 (((s)->flags & BSF_FILE) != 0 \
522 || ((sn)[(snl) - 2] == '.' \
523 && ((sn)[(snl) - 1] == 'o' \
524 || (sn)[(snl) - 1] == 'a')))
525
526 af = file_symbol (a, an, anl);
527 bf = file_symbol (b, bn, bnl);
528
529 if (af && ! bf)
530 return 1;
531 if (! af && bf)
532 return -1;
533
534 /* Try to sort global symbols before local symbols before function
535 symbols before debugging symbols. */
536
537 aflags = a->flags;
538 bflags = b->flags;
539
540 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
541 {
542 if ((aflags & BSF_DEBUGGING) != 0)
543 return 1;
544 else
545 return -1;
546 }
547 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
548 {
549 if ((aflags & BSF_FUNCTION) != 0)
550 return -1;
551 else
552 return 1;
553 }
554 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
555 {
556 if ((aflags & BSF_LOCAL) != 0)
557 return 1;
558 else
559 return -1;
560 }
561 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
562 {
563 if ((aflags & BSF_GLOBAL) != 0)
564 return -1;
565 else
566 return 1;
567 }
568
569 /* Symbols that start with '.' might be section names, so sort them
570 after symbols that don't start with '.'. */
571 if (an[0] == '.' && bn[0] != '.')
572 return 1;
573 if (an[0] != '.' && bn[0] == '.')
574 return -1;
575
576 /* Finally, if we can't distinguish them in any other way, try to
577 get consistent results by sorting the symbols by name. */
578 return strcmp (an, bn);
579 }
580
581 /* Sort relocs into address order. */
582
583 static int
584 compare_relocs (const void *ap, const void *bp)
585 {
586 const arelent *a = * (const arelent **) ap;
587 const arelent *b = * (const arelent **) bp;
588
589 if (a->address > b->address)
590 return 1;
591 else if (a->address < b->address)
592 return -1;
593
594 /* So that associated relocations tied to the same address show up
595 in the correct order, we don't do any further sorting. */
596 if (a > b)
597 return 1;
598 else if (a < b)
599 return -1;
600 else
601 return 0;
602 }
603
604 /* Print an address (VMA) to the output stream in INFO.
605 If SKIP_ZEROES is TRUE, omit leading zeroes. */
606
607 static void
608 objdump_print_value (bfd_vma vma, struct disassemble_info *info,
609 bfd_boolean skip_zeroes)
610 {
611 char buf[30];
612 char *p;
613 struct objdump_disasm_info *aux;
614
615 aux = (struct objdump_disasm_info *) info->application_data;
616 bfd_sprintf_vma (aux->abfd, buf, vma);
617 if (! skip_zeroes)
618 p = buf;
619 else
620 {
621 for (p = buf; *p == '0'; ++p)
622 ;
623 if (*p == '\0')
624 --p;
625 }
626 (*info->fprintf_func) (info->stream, "%s", p);
627 }
628
629 /* Print the name of a symbol. */
630
631 static void
632 objdump_print_symname (bfd *abfd, struct disassemble_info *info,
633 asymbol *sym)
634 {
635 char *alloc;
636 const char *name;
637
638 alloc = NULL;
639 name = bfd_asymbol_name (sym);
640 if (do_demangle && name[0] != '\0')
641 {
642 /* Demangle the name. */
643 alloc = demangle (abfd, name);
644 name = alloc;
645 }
646
647 if (info != NULL)
648 (*info->fprintf_func) (info->stream, "%s", name);
649 else
650 printf ("%s", name);
651
652 if (alloc != NULL)
653 free (alloc);
654 }
655
656 /* Locate a symbol given a bfd and a section (from INFO->application_data),
657 and a VMA. If INFO->application_data->require_sec is TRUE, then always
658 require the symbol to be in the section. Returns NULL if there is no
659 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
660 of the symbol in sorted_syms. */
661
662 static asymbol *
663 find_symbol_for_address (bfd_vma vma,
664 struct disassemble_info *info,
665 long *place)
666 {
667 /* @@ Would it speed things up to cache the last two symbols returned,
668 and maybe their address ranges? For many processors, only one memory
669 operand can be present at a time, so the 2-entry cache wouldn't be
670 constantly churned by code doing heavy memory accesses. */
671
672 /* Indices in `sorted_syms'. */
673 long min = 0;
674 long max = sorted_symcount;
675 long thisplace;
676 struct objdump_disasm_info *aux;
677 bfd *abfd;
678 asection *sec;
679 unsigned int opb;
680
681 if (sorted_symcount < 1)
682 return NULL;
683
684 aux = (struct objdump_disasm_info *) info->application_data;
685 abfd = aux->abfd;
686 sec = aux->sec;
687 opb = bfd_octets_per_byte (abfd);
688
689 /* Perform a binary search looking for the closest symbol to the
690 required value. We are searching the range (min, max]. */
691 while (min + 1 < max)
692 {
693 asymbol *sym;
694
695 thisplace = (max + min) / 2;
696 sym = sorted_syms[thisplace];
697
698 if (bfd_asymbol_value (sym) > vma)
699 max = thisplace;
700 else if (bfd_asymbol_value (sym) < vma)
701 min = thisplace;
702 else
703 {
704 min = thisplace;
705 break;
706 }
707 }
708
709 /* The symbol we want is now in min, the low end of the range we
710 were searching. If there are several symbols with the same
711 value, we want the first one. */
712 thisplace = min;
713 while (thisplace > 0
714 && (bfd_asymbol_value (sorted_syms[thisplace])
715 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
716 --thisplace;
717
718 /* If the file is relocatable, and the symbol could be from this
719 section, prefer a symbol from this section over symbols from
720 others, even if the other symbol's value might be closer.
721
722 Note that this may be wrong for some symbol references if the
723 sections have overlapping memory ranges, but in that case there's
724 no way to tell what's desired without looking at the relocation
725 table. */
726 if (sorted_syms[thisplace]->section != sec
727 && (aux->require_sec
728 || ((abfd->flags & HAS_RELOC) != 0
729 && vma >= bfd_get_section_vma (abfd, sec)
730 && vma < (bfd_get_section_vma (abfd, sec)
731 + bfd_section_size (abfd, sec) / opb))))
732 {
733 long i;
734
735 for (i = thisplace + 1; i < sorted_symcount; i++)
736 {
737 if (bfd_asymbol_value (sorted_syms[i])
738 != bfd_asymbol_value (sorted_syms[thisplace]))
739 break;
740 }
741
742 --i;
743
744 for (; i >= 0; i--)
745 {
746 if (sorted_syms[i]->section == sec
747 && (i == 0
748 || sorted_syms[i - 1]->section != sec
749 || (bfd_asymbol_value (sorted_syms[i])
750 != bfd_asymbol_value (sorted_syms[i - 1]))))
751 {
752 thisplace = i;
753 break;
754 }
755 }
756
757 if (sorted_syms[thisplace]->section != sec)
758 {
759 /* We didn't find a good symbol with a smaller value.
760 Look for one with a larger value. */
761 for (i = thisplace + 1; i < sorted_symcount; i++)
762 {
763 if (sorted_syms[i]->section == sec)
764 {
765 thisplace = i;
766 break;
767 }
768 }
769 }
770
771 if (sorted_syms[thisplace]->section != sec
772 && (aux->require_sec
773 || ((abfd->flags & HAS_RELOC) != 0
774 && vma >= bfd_get_section_vma (abfd, sec)
775 && vma < (bfd_get_section_vma (abfd, sec)
776 + bfd_section_size (abfd, sec)))))
777 /* There is no suitable symbol. */
778 return NULL;
779 }
780
781 /* Give the target a chance to reject the symbol. */
782 while (! info->symbol_is_valid (sorted_syms [thisplace], info))
783 {
784 ++ thisplace;
785 if (thisplace >= sorted_symcount
786 || bfd_asymbol_value (sorted_syms [thisplace]) > vma)
787 return NULL;
788 }
789
790 if (place != NULL)
791 *place = thisplace;
792
793 return sorted_syms[thisplace];
794 }
795
796 /* Print an address and the offset to the nearest symbol. */
797
798 static void
799 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
800 bfd_vma vma, struct disassemble_info *info,
801 bfd_boolean skip_zeroes)
802 {
803 objdump_print_value (vma, info, skip_zeroes);
804
805 if (sym == NULL)
806 {
807 bfd_vma secaddr;
808
809 (*info->fprintf_func) (info->stream, " <%s",
810 bfd_get_section_name (abfd, sec));
811 secaddr = bfd_get_section_vma (abfd, sec);
812 if (vma < secaddr)
813 {
814 (*info->fprintf_func) (info->stream, "-0x");
815 objdump_print_value (secaddr - vma, info, TRUE);
816 }
817 else if (vma > secaddr)
818 {
819 (*info->fprintf_func) (info->stream, "+0x");
820 objdump_print_value (vma - secaddr, info, TRUE);
821 }
822 (*info->fprintf_func) (info->stream, ">");
823 }
824 else
825 {
826 (*info->fprintf_func) (info->stream, " <");
827 objdump_print_symname (abfd, info, sym);
828 if (bfd_asymbol_value (sym) > vma)
829 {
830 (*info->fprintf_func) (info->stream, "-0x");
831 objdump_print_value (bfd_asymbol_value (sym) - vma, info, TRUE);
832 }
833 else if (vma > bfd_asymbol_value (sym))
834 {
835 (*info->fprintf_func) (info->stream, "+0x");
836 objdump_print_value (vma - bfd_asymbol_value (sym), info, TRUE);
837 }
838 (*info->fprintf_func) (info->stream, ">");
839 }
840 }
841
842 /* Print an address (VMA), symbolically if possible.
843 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
844
845 static void
846 objdump_print_addr (bfd_vma vma,
847 struct disassemble_info *info,
848 bfd_boolean skip_zeroes)
849 {
850 struct objdump_disasm_info *aux;
851 asymbol *sym;
852
853 if (sorted_symcount < 1)
854 {
855 (*info->fprintf_func) (info->stream, "0x");
856 objdump_print_value (vma, info, skip_zeroes);
857 return;
858 }
859
860 aux = (struct objdump_disasm_info *) info->application_data;
861 sym = find_symbol_for_address (vma, info, NULL);
862 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, info,
863 skip_zeroes);
864 }
865
866 /* Print VMA to INFO. This function is passed to the disassembler
867 routine. */
868
869 static void
870 objdump_print_address (bfd_vma vma, struct disassemble_info *info)
871 {
872 objdump_print_addr (vma, info, ! prefix_addresses);
873 }
874
875 /* Determine of the given address has a symbol associated with it. */
876
877 static int
878 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * info)
879 {
880 asymbol * sym;
881
882 sym = find_symbol_for_address (vma, info, NULL);
883
884 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
885 }
886
887 /* Hold the last function name and the last line number we displayed
888 in a disassembly. */
889
890 static char *prev_functionname;
891 static unsigned int prev_line;
892
893 /* We keep a list of all files that we have seen when doing a
894 disassembly with source, so that we know how much of the file to
895 display. This can be important for inlined functions. */
896
897 struct print_file_list
898 {
899 struct print_file_list *next;
900 const char *filename;
901 const char *modname;
902 unsigned int line;
903 FILE *f;
904 };
905
906 static struct print_file_list *print_files;
907
908 /* The number of preceding context lines to show when we start
909 displaying a file for the first time. */
910
911 #define SHOW_PRECEDING_CONTEXT_LINES (5)
912
913 /* Tries to open MODNAME, and if successful adds a node to print_files
914 linked list and returns that node. Returns NULL on failure. */
915
916 static struct print_file_list *
917 try_print_file_open (const char *origname, const char *modname)
918 {
919 struct print_file_list *p;
920 FILE *f;
921
922 f = fopen (modname, "r");
923 if (f == NULL)
924 return NULL;
925
926 if (print_files != NULL && print_files->f != NULL)
927 {
928 fclose (print_files->f);
929 print_files->f = NULL;
930 }
931
932 p = xmalloc (sizeof (struct print_file_list));
933 p->filename = origname;
934 p->modname = modname;
935 p->line = 0;
936 p->f = f;
937 p->next = print_files;
938 print_files = p;
939 return p;
940 }
941
942 /* If the the source file, as described in the symtab, is not found
943 try to locate it in one of the paths specified with -I
944 If found, add location to print_files linked list. */
945
946 static struct print_file_list *
947 update_source_path (const char *filename)
948 {
949 struct print_file_list *p;
950 const char *fname;
951 int i;
952
953 if (filename == NULL)
954 return NULL;
955
956 p = try_print_file_open (filename, filename);
957 if (p != NULL)
958 return p;
959
960 if (include_path_count == 0)
961 return NULL;
962
963 /* Get the name of the file. */
964 fname = strrchr (filename, '/');
965 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
966 {
967 /* We could have a mixed forward/back slash case. */
968 char *backslash = strrchr (filename, '\\');
969 if (fname == NULL || (backslash != NULL && backslash > fname))
970 fname = backslash;
971 if (fname == NULL && filename[0] != '\0' && filename[1] == ':')
972 fname = filename + 1;
973 }
974 #endif
975 if (fname == NULL)
976 fname = filename;
977 else
978 ++fname;
979
980 /* If file exists under a new path, we need to add it to the list
981 so that show_line knows about it. */
982 for (i = 0; i < include_path_count; i++)
983 {
984 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
985
986 p = try_print_file_open (filename, modname);
987 if (p)
988 return p;
989
990 free (modname);
991 }
992
993 return NULL;
994 }
995
996 /* Skip ahead to a given line in a file, optionally printing each
997 line. */
998
999 static void
1000 skip_to_line (struct print_file_list *p, unsigned int line,
1001 bfd_boolean show)
1002 {
1003 while (p->line < line)
1004 {
1005 char buf[100];
1006
1007 if (fgets (buf, sizeof buf, p->f) == NULL)
1008 {
1009 fclose (p->f);
1010 p->f = NULL;
1011 break;
1012 }
1013
1014 if (show)
1015 printf ("%s", buf);
1016
1017 if (strchr (buf, '\n') != NULL)
1018 ++p->line;
1019 }
1020 }
1021
1022 /* Show the line number, or the source line, in a disassembly
1023 listing. */
1024
1025 static void
1026 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1027 {
1028 const char *filename;
1029 const char *functionname;
1030 unsigned int line;
1031
1032 if (! with_line_numbers && ! with_source_code)
1033 return;
1034
1035 if (! bfd_find_nearest_line (abfd, section, syms, addr_offset, &filename,
1036 &functionname, &line))
1037 return;
1038
1039 if (filename != NULL && *filename == '\0')
1040 filename = NULL;
1041 if (functionname != NULL && *functionname == '\0')
1042 functionname = NULL;
1043
1044 if (with_line_numbers)
1045 {
1046 if (functionname != NULL
1047 && (prev_functionname == NULL
1048 || strcmp (functionname, prev_functionname) != 0))
1049 printf ("%s():\n", functionname);
1050 if (line > 0 && line != prev_line)
1051 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
1052 }
1053
1054 if (with_source_code
1055 && filename != NULL
1056 && line > 0)
1057 {
1058 struct print_file_list **pp, *p;
1059
1060 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1061 if (strcmp ((*pp)->filename, filename) == 0)
1062 break;
1063 p = *pp;
1064
1065 if (p != NULL)
1066 {
1067 if (p != print_files)
1068 {
1069 int l;
1070
1071 /* We have reencountered a file name which we saw
1072 earlier. This implies that either we are dumping out
1073 code from an included file, or the same file was
1074 linked in more than once. There are two common cases
1075 of an included file: inline functions in a header
1076 file, and a bison or flex skeleton file. In the
1077 former case we want to just start printing (but we
1078 back up a few lines to give context); in the latter
1079 case we want to continue from where we left off. I
1080 can't think of a good way to distinguish the cases,
1081 so I used a heuristic based on the file name. */
1082 if (strcmp (p->filename + strlen (p->filename) - 2, ".h") != 0)
1083 l = p->line;
1084 else
1085 {
1086 l = line - SHOW_PRECEDING_CONTEXT_LINES;
1087 if (l < 0)
1088 l = 0;
1089 }
1090
1091 if (p->f == NULL)
1092 {
1093 p->f = fopen (p->modname, "r");
1094 p->line = 0;
1095 }
1096 if (p->f != NULL)
1097 skip_to_line (p, l, FALSE);
1098
1099 if (print_files->f != NULL)
1100 {
1101 fclose (print_files->f);
1102 print_files->f = NULL;
1103 }
1104 }
1105
1106 if (p->f != NULL)
1107 {
1108 skip_to_line (p, line, TRUE);
1109 *pp = p->next;
1110 p->next = print_files;
1111 print_files = p;
1112 }
1113 }
1114 else
1115 {
1116 p = update_source_path (filename);
1117
1118 if (p != NULL)
1119 {
1120 int l;
1121
1122 if (file_start_context)
1123 l = 0;
1124 else
1125 l = line - SHOW_PRECEDING_CONTEXT_LINES;
1126 if (l < 0)
1127 l = 0;
1128 skip_to_line (p, l, FALSE);
1129 if (p->f != NULL)
1130 skip_to_line (p, line, TRUE);
1131 }
1132 }
1133 }
1134
1135 if (functionname != NULL
1136 && (prev_functionname == NULL
1137 || strcmp (functionname, prev_functionname) != 0))
1138 {
1139 if (prev_functionname != NULL)
1140 free (prev_functionname);
1141 prev_functionname = xmalloc (strlen (functionname) + 1);
1142 strcpy (prev_functionname, functionname);
1143 }
1144
1145 if (line > 0 && line != prev_line)
1146 prev_line = line;
1147 }
1148
1149 /* Pseudo FILE object for strings. */
1150 typedef struct
1151 {
1152 char *buffer;
1153 size_t pos;
1154 size_t alloc;
1155 } SFILE;
1156
1157 /* sprintf to a "stream". */
1158
1159 static int
1160 objdump_sprintf (SFILE *f, const char *format, ...)
1161 {
1162 size_t n;
1163 va_list args;
1164
1165 while (1)
1166 {
1167 size_t space = f->alloc - f->pos;
1168
1169 va_start (args, format);
1170 n = vsnprintf (f->buffer + f->pos, space, format, args);
1171 va_end (args);
1172
1173 if (space > n)
1174 break;
1175
1176 f->alloc = (f->alloc + n) * 2;
1177 f->buffer = xrealloc (f->buffer, f->alloc);
1178 }
1179 f->pos += n;
1180
1181 return n;
1182 }
1183
1184 /* Returns TRUE if the specified section should be dumped. */
1185
1186 static bfd_boolean
1187 process_section_p (asection * section)
1188 {
1189 size_t i;
1190
1191 if (only == NULL)
1192 return TRUE;
1193
1194 for (i = 0; i < only_used; i++)
1195 if (strcmp (only [i], section->name) == 0)
1196 return TRUE;
1197
1198 return FALSE;
1199 }
1200
1201
1202 /* The number of zeroes we want to see before we start skipping them.
1203 The number is arbitrarily chosen. */
1204
1205 #ifndef SKIP_ZEROES
1206 #define SKIP_ZEROES (8)
1207 #endif
1208
1209 /* The number of zeroes to skip at the end of a section. If the
1210 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1211 SKIP_ZEROES, they will be disassembled. If there are fewer than
1212 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1213 attempt to avoid disassembling zeroes inserted by section
1214 alignment. */
1215
1216 #ifndef SKIP_ZEROES_AT_END
1217 #define SKIP_ZEROES_AT_END (3)
1218 #endif
1219
1220 /* Disassemble some data in memory between given values. */
1221
1222 static void
1223 disassemble_bytes (struct disassemble_info * info,
1224 disassembler_ftype disassemble_fn,
1225 bfd_boolean insns,
1226 bfd_byte * data,
1227 bfd_vma start_offset,
1228 bfd_vma stop_offset,
1229 bfd_vma rel_offset,
1230 arelent *** relppp,
1231 arelent ** relppend)
1232 {
1233 struct objdump_disasm_info *aux;
1234 asection *section;
1235 int octets_per_line;
1236 bfd_boolean done_dot;
1237 int skip_addr_chars;
1238 bfd_vma addr_offset;
1239 int opb = info->octets_per_byte;
1240 SFILE sfile;
1241
1242 aux = (struct objdump_disasm_info *) info->application_data;
1243 section = aux->sec;
1244
1245 sfile.alloc = 120;
1246 sfile.buffer = xmalloc (sfile.alloc);
1247 sfile.pos = 0;
1248
1249 if (insns)
1250 octets_per_line = 4;
1251 else
1252 octets_per_line = 16;
1253
1254 /* Figure out how many characters to skip at the start of an
1255 address, to make the disassembly look nicer. We discard leading
1256 zeroes in chunks of 4, ensuring that there is always a leading
1257 zero remaining. */
1258 skip_addr_chars = 0;
1259 if (! prefix_addresses)
1260 {
1261 char buf[30];
1262 char *s;
1263
1264 bfd_sprintf_vma
1265 (aux->abfd, buf,
1266 (section->vma
1267 + bfd_section_size (section->owner, section) / opb));
1268 s = buf;
1269 while (s[0] == '0' && s[1] == '0' && s[2] == '0' && s[3] == '0'
1270 && s[4] == '0')
1271 {
1272 skip_addr_chars += 4;
1273 s += 4;
1274 }
1275 }
1276
1277 info->insn_info_valid = 0;
1278
1279 done_dot = FALSE;
1280 addr_offset = start_offset;
1281 while (addr_offset < stop_offset)
1282 {
1283 bfd_vma z;
1284 int octets = 0;
1285 bfd_boolean need_nl = FALSE;
1286
1287 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1288 print `...'. */
1289 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1290 if (data[z] != 0)
1291 break;
1292 if (! disassemble_zeroes
1293 && (info->insn_info_valid == 0
1294 || info->branch_delay_insns == 0)
1295 && (z - addr_offset * opb >= SKIP_ZEROES
1296 || (z == stop_offset * opb &&
1297 z - addr_offset * opb < SKIP_ZEROES_AT_END)))
1298 {
1299 printf ("\t...\n");
1300
1301 /* If there are more nonzero octets to follow, we only skip
1302 zeroes in multiples of 4, to try to avoid running over
1303 the start of an instruction which happens to start with
1304 zero. */
1305 if (z != stop_offset * opb)
1306 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1307
1308 octets = z - addr_offset * opb;
1309 }
1310 else
1311 {
1312 char buf[50];
1313 int bpc = 0;
1314 int pb = 0;
1315
1316 done_dot = FALSE;
1317
1318 if (with_line_numbers || with_source_code)
1319 /* The line number tables will refer to unadjusted
1320 section VMAs, so we must undo any VMA modifications
1321 when calling show_line. */
1322 show_line (aux->abfd, section, addr_offset - adjust_section_vma);
1323
1324 if (! prefix_addresses)
1325 {
1326 char *s;
1327
1328 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1329 for (s = buf + skip_addr_chars; *s == '0'; s++)
1330 *s = ' ';
1331 if (*s == '\0')
1332 *--s = '0';
1333 printf ("%s:\t", buf + skip_addr_chars);
1334 }
1335 else
1336 {
1337 aux->require_sec = TRUE;
1338 objdump_print_address (section->vma + addr_offset, info);
1339 aux->require_sec = FALSE;
1340 putchar (' ');
1341 }
1342
1343 if (insns)
1344 {
1345 sfile.pos = 0;
1346 info->fprintf_func = (fprintf_ftype) objdump_sprintf;
1347 info->stream = (FILE *) &sfile;
1348 info->bytes_per_line = 0;
1349 info->bytes_per_chunk = 0;
1350
1351 #ifdef DISASSEMBLER_NEEDS_RELOCS
1352 /* FIXME: This is wrong. It tests the number of octets
1353 in the last instruction, not the current one. */
1354 if (*relppp < relppend
1355 && (**relppp)->address >= rel_offset + addr_offset
1356 && ((**relppp)->address
1357 < rel_offset + addr_offset + octets / opb))
1358 info->flags = INSN_HAS_RELOC;
1359 else
1360 #endif
1361 info->flags = 0;
1362
1363 octets = (*disassemble_fn) (section->vma + addr_offset, info);
1364 info->fprintf_func = (fprintf_ftype) fprintf;
1365 info->stream = stdout;
1366 if (info->bytes_per_line != 0)
1367 octets_per_line = info->bytes_per_line;
1368 if (octets < 0)
1369 {
1370 if (sfile.pos)
1371 printf ("%s\n", sfile.buffer);
1372 break;
1373 }
1374 }
1375 else
1376 {
1377 bfd_vma j;
1378
1379 octets = octets_per_line;
1380 if (addr_offset + octets / opb > stop_offset)
1381 octets = (stop_offset - addr_offset) * opb;
1382
1383 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1384 {
1385 if (ISPRINT (data[j]))
1386 buf[j - addr_offset * opb] = data[j];
1387 else
1388 buf[j - addr_offset * opb] = '.';
1389 }
1390 buf[j - addr_offset * opb] = '\0';
1391 }
1392
1393 if (prefix_addresses
1394 ? show_raw_insn > 0
1395 : show_raw_insn >= 0)
1396 {
1397 bfd_vma j;
1398
1399 /* If ! prefix_addresses and ! wide_output, we print
1400 octets_per_line octets per line. */
1401 pb = octets;
1402 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1403 pb = octets_per_line;
1404
1405 if (info->bytes_per_chunk)
1406 bpc = info->bytes_per_chunk;
1407 else
1408 bpc = 1;
1409
1410 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1411 {
1412 int k;
1413
1414 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1415 {
1416 for (k = bpc - 1; k >= 0; k--)
1417 printf ("%02x", (unsigned) data[j + k]);
1418 putchar (' ');
1419 }
1420 else
1421 {
1422 for (k = 0; k < bpc; k++)
1423 printf ("%02x", (unsigned) data[j + k]);
1424 putchar (' ');
1425 }
1426 }
1427
1428 for (; pb < octets_per_line; pb += bpc)
1429 {
1430 int k;
1431
1432 for (k = 0; k < bpc; k++)
1433 printf (" ");
1434 putchar (' ');
1435 }
1436
1437 /* Separate raw data from instruction by extra space. */
1438 if (insns)
1439 putchar ('\t');
1440 else
1441 printf (" ");
1442 }
1443
1444 if (! insns)
1445 printf ("%s", buf);
1446 else if (sfile.pos)
1447 printf ("%s", sfile.buffer);
1448
1449 if (prefix_addresses
1450 ? show_raw_insn > 0
1451 : show_raw_insn >= 0)
1452 {
1453 while (pb < octets)
1454 {
1455 bfd_vma j;
1456 char *s;
1457
1458 putchar ('\n');
1459 j = addr_offset * opb + pb;
1460
1461 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1462 for (s = buf + skip_addr_chars; *s == '0'; s++)
1463 *s = ' ';
1464 if (*s == '\0')
1465 *--s = '0';
1466 printf ("%s:\t", buf + skip_addr_chars);
1467
1468 pb += octets_per_line;
1469 if (pb > octets)
1470 pb = octets;
1471 for (; j < addr_offset * opb + pb; j += bpc)
1472 {
1473 int k;
1474
1475 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1476 {
1477 for (k = bpc - 1; k >= 0; k--)
1478 printf ("%02x", (unsigned) data[j + k]);
1479 putchar (' ');
1480 }
1481 else
1482 {
1483 for (k = 0; k < bpc; k++)
1484 printf ("%02x", (unsigned) data[j + k]);
1485 putchar (' ');
1486 }
1487 }
1488 }
1489 }
1490
1491 if (!wide_output)
1492 putchar ('\n');
1493 else
1494 need_nl = TRUE;
1495 }
1496
1497 while ((*relppp) < relppend
1498 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1499 {
1500 if (dump_reloc_info || dump_dynamic_reloc_info)
1501 {
1502 arelent *q;
1503
1504 q = **relppp;
1505
1506 if (wide_output)
1507 putchar ('\t');
1508 else
1509 printf ("\t\t\t");
1510
1511 objdump_print_value (section->vma - rel_offset + q->address,
1512 info, TRUE);
1513
1514 printf (": %s\t", q->howto->name);
1515
1516 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1517 printf ("*unknown*");
1518 else
1519 {
1520 const char *sym_name;
1521
1522 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1523 if (sym_name != NULL && *sym_name != '\0')
1524 objdump_print_symname (aux->abfd, info, *q->sym_ptr_ptr);
1525 else
1526 {
1527 asection *sym_sec;
1528
1529 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1530 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1531 if (sym_name == NULL || *sym_name == '\0')
1532 sym_name = "*unknown*";
1533 printf ("%s", sym_name);
1534 }
1535 }
1536
1537 if (q->addend)
1538 {
1539 printf ("+0x");
1540 objdump_print_value (q->addend, info, TRUE);
1541 }
1542
1543 printf ("\n");
1544 need_nl = FALSE;
1545 }
1546 ++(*relppp);
1547 }
1548
1549 if (need_nl)
1550 printf ("\n");
1551
1552 addr_offset += octets / opb;
1553 }
1554
1555 free (sfile.buffer);
1556 }
1557
1558 static void
1559 disassemble_section (bfd *abfd, asection *section, void *info)
1560 {
1561 struct disassemble_info * pinfo = (struct disassemble_info *) info;
1562 struct objdump_disasm_info * paux;
1563 unsigned int opb = pinfo->octets_per_byte;
1564 bfd_byte * data = NULL;
1565 bfd_size_type datasize = 0;
1566 arelent ** rel_pp = NULL;
1567 arelent ** rel_ppstart = NULL;
1568 arelent ** rel_ppend;
1569 unsigned long stop_offset;
1570 asymbol * sym = NULL;
1571 long place = 0;
1572 long rel_count;
1573 bfd_vma rel_offset;
1574 unsigned long addr_offset;
1575
1576 /* Sections that do not contain machine
1577 code are not normally disassembled. */
1578 if (! disassemble_all
1579 && only == NULL
1580 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1581 != (SEC_CODE | SEC_HAS_CONTENTS)))
1582 return;
1583
1584 if (! process_section_p (section))
1585 return;
1586
1587 datasize = bfd_get_section_size (section);
1588 if (datasize == 0)
1589 return;
1590
1591 /* Decide which set of relocs to use. Load them if necessary. */
1592 paux = (struct objdump_disasm_info *) pinfo->application_data;
1593 if (paux->dynrelbuf)
1594 {
1595 rel_pp = paux->dynrelbuf;
1596 rel_count = paux->dynrelcount;
1597 /* Dynamic reloc addresses are absolute, non-dynamic are section
1598 relative. REL_OFFSET specifies the reloc address corresponding
1599 to the start of this section. */
1600 rel_offset = section->vma;
1601 }
1602 else
1603 {
1604 rel_count = 0;
1605 rel_pp = NULL;
1606 rel_offset = 0;
1607
1608 if ((section->flags & SEC_RELOC) != 0
1609 #ifndef DISASSEMBLER_NEEDS_RELOCS
1610 && dump_reloc_info
1611 #endif
1612 )
1613 {
1614 long relsize;
1615
1616 relsize = bfd_get_reloc_upper_bound (abfd, section);
1617 if (relsize < 0)
1618 bfd_fatal (bfd_get_filename (abfd));
1619
1620 if (relsize > 0)
1621 {
1622 rel_ppstart = rel_pp = xmalloc (relsize);
1623 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1624 if (rel_count < 0)
1625 bfd_fatal (bfd_get_filename (abfd));
1626
1627 /* Sort the relocs by address. */
1628 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1629 }
1630 }
1631
1632 }
1633 rel_ppend = rel_pp + rel_count;
1634
1635 data = xmalloc (datasize);
1636
1637 bfd_get_section_contents (abfd, section, data, 0, datasize);
1638
1639 paux->sec = section;
1640 pinfo->buffer = data;
1641 pinfo->buffer_vma = section->vma;
1642 pinfo->buffer_length = datasize;
1643 pinfo->section = section;
1644
1645 if (start_address == (bfd_vma) -1
1646 || start_address < pinfo->buffer_vma)
1647 addr_offset = 0;
1648 else
1649 addr_offset = start_address - pinfo->buffer_vma;
1650
1651 if (stop_address == (bfd_vma) -1)
1652 stop_offset = datasize / opb;
1653 else
1654 {
1655 if (stop_address < pinfo->buffer_vma)
1656 stop_offset = 0;
1657 else
1658 stop_offset = stop_address - pinfo->buffer_vma;
1659 if (stop_offset > pinfo->buffer_length / opb)
1660 stop_offset = pinfo->buffer_length / opb;
1661 }
1662
1663 /* Skip over the relocs belonging to addresses below the
1664 start address. */
1665 while (rel_pp < rel_ppend
1666 && (*rel_pp)->address < rel_offset + addr_offset)
1667 ++rel_pp;
1668
1669 printf (_("Disassembly of section %s:\n"), section->name);
1670
1671 /* Find the nearest symbol forwards from our current position. */
1672 paux->require_sec = TRUE;
1673 sym = find_symbol_for_address (section->vma + addr_offset, info, &place);
1674 paux->require_sec = FALSE;
1675
1676 /* Disassemble a block of instructions up to the address associated with
1677 the symbol we have just found. Then print the symbol and find the
1678 next symbol on. Repeat until we have disassembled the entire section
1679 or we have reached the end of the address range we are interested in. */
1680 while (addr_offset < stop_offset)
1681 {
1682 bfd_vma addr;
1683 asymbol *nextsym;
1684 unsigned long nextstop_offset;
1685 bfd_boolean insns;
1686
1687 addr = section->vma + addr_offset;
1688
1689 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
1690 {
1691 int x;
1692
1693 for (x = place;
1694 (x < sorted_symcount
1695 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
1696 ++x)
1697 continue;
1698
1699 pinfo->symbols = sorted_syms + place;
1700 pinfo->num_symbols = x - place;
1701 }
1702 else
1703 {
1704 pinfo->symbols = NULL;
1705 pinfo->num_symbols = 0;
1706 }
1707
1708 if (! prefix_addresses)
1709 {
1710 pinfo->fprintf_func (pinfo->stream, "\n");
1711 objdump_print_addr_with_sym (abfd, section, sym, addr,
1712 pinfo, FALSE);
1713 pinfo->fprintf_func (pinfo->stream, ":\n");
1714 }
1715
1716 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1717 nextsym = sym;
1718 else if (sym == NULL)
1719 nextsym = NULL;
1720 else
1721 {
1722 #define is_valid_next_sym(SYM) \
1723 ((SYM)->section == section \
1724 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
1725 && pinfo->symbol_is_valid (SYM, pinfo))
1726
1727 /* Search forward for the next appropriate symbol in
1728 SECTION. Note that all the symbols are sorted
1729 together into one big array, and that some sections
1730 may have overlapping addresses. */
1731 while (place < sorted_symcount
1732 && ! is_valid_next_sym (sorted_syms [place]))
1733 ++place;
1734
1735 if (place >= sorted_symcount)
1736 nextsym = NULL;
1737 else
1738 nextsym = sorted_syms[place];
1739 }
1740
1741 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1742 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
1743 else if (nextsym == NULL)
1744 nextstop_offset = stop_offset;
1745 else
1746 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
1747
1748 if (nextstop_offset > stop_offset)
1749 nextstop_offset = stop_offset;
1750
1751 /* If a symbol is explicitly marked as being an object
1752 rather than a function, just dump the bytes without
1753 disassembling them. */
1754 if (disassemble_all
1755 || sym == NULL
1756 || bfd_asymbol_value (sym) > addr
1757 || ((sym->flags & BSF_OBJECT) == 0
1758 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
1759 == NULL)
1760 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
1761 == NULL))
1762 || (sym->flags & BSF_FUNCTION) != 0)
1763 insns = TRUE;
1764 else
1765 insns = FALSE;
1766
1767 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
1768 addr_offset, nextstop_offset,
1769 rel_offset, &rel_pp, rel_ppend);
1770
1771 addr_offset = nextstop_offset;
1772 sym = nextsym;
1773 }
1774
1775 free (data);
1776
1777 if (rel_ppstart != NULL)
1778 free (rel_ppstart);
1779 }
1780
1781 /* Disassemble the contents of an object file. */
1782
1783 static void
1784 disassemble_data (bfd *abfd)
1785 {
1786 struct disassemble_info disasm_info;
1787 struct objdump_disasm_info aux;
1788 long i;
1789
1790 print_files = NULL;
1791 prev_functionname = NULL;
1792 prev_line = -1;
1793
1794 /* We make a copy of syms to sort. We don't want to sort syms
1795 because that will screw up the relocs. */
1796 sorted_symcount = symcount ? symcount : dynsymcount;
1797 sorted_syms = xmalloc ((sorted_symcount + synthcount) * sizeof (asymbol *));
1798 memcpy (sorted_syms, symcount ? syms : dynsyms,
1799 sorted_symcount * sizeof (asymbol *));
1800
1801 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
1802
1803 for (i = 0; i < synthcount; ++i)
1804 {
1805 sorted_syms[sorted_symcount] = synthsyms + i;
1806 ++sorted_symcount;
1807 }
1808
1809 /* Sort the symbols into section and symbol order. */
1810 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
1811
1812 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
1813
1814 disasm_info.application_data = (void *) &aux;
1815 aux.abfd = abfd;
1816 aux.require_sec = FALSE;
1817 aux.dynrelbuf = NULL;
1818 aux.dynrelcount = 0;
1819
1820 disasm_info.print_address_func = objdump_print_address;
1821 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
1822
1823 if (machine != NULL)
1824 {
1825 const bfd_arch_info_type *info = bfd_scan_arch (machine);
1826
1827 if (info == NULL)
1828 fatal (_("Can't use supplied machine %s"), machine);
1829
1830 abfd->arch_info = info;
1831 }
1832
1833 if (endian != BFD_ENDIAN_UNKNOWN)
1834 {
1835 struct bfd_target *xvec;
1836
1837 xvec = xmalloc (sizeof (struct bfd_target));
1838 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
1839 xvec->byteorder = endian;
1840 abfd->xvec = xvec;
1841 }
1842
1843 /* Use libopcodes to locate a suitable disassembler. */
1844 aux.disassemble_fn = disassembler (abfd);
1845 if (!aux.disassemble_fn)
1846 {
1847 non_fatal (_("Can't disassemble for architecture %s\n"),
1848 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
1849 exit_status = 1;
1850 return;
1851 }
1852
1853 disasm_info.flavour = bfd_get_flavour (abfd);
1854 disasm_info.arch = bfd_get_arch (abfd);
1855 disasm_info.mach = bfd_get_mach (abfd);
1856 disasm_info.disassembler_options = disassembler_options;
1857 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
1858
1859 if (bfd_big_endian (abfd))
1860 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
1861 else if (bfd_little_endian (abfd))
1862 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
1863 else
1864 /* ??? Aborting here seems too drastic. We could default to big or little
1865 instead. */
1866 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
1867
1868 /* Allow the target to customize the info structure. */
1869 disassemble_init_for_target (& disasm_info);
1870
1871 /* Pre-load the dynamic relocs if we are going
1872 to be dumping them along with the disassembly. */
1873 if (dump_dynamic_reloc_info)
1874 {
1875 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
1876
1877 if (relsize < 0)
1878 bfd_fatal (bfd_get_filename (abfd));
1879
1880 if (relsize > 0)
1881 {
1882 aux.dynrelbuf = xmalloc (relsize);
1883 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
1884 aux.dynrelbuf,
1885 dynsyms);
1886 if (aux.dynrelcount < 0)
1887 bfd_fatal (bfd_get_filename (abfd));
1888
1889 /* Sort the relocs by address. */
1890 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
1891 compare_relocs);
1892 }
1893 }
1894
1895 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
1896
1897 if (aux.dynrelbuf != NULL)
1898 free (aux.dynrelbuf);
1899 free (sorted_syms);
1900 }
1901 \f
1902 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
1903 it. Return NULL on failure. */
1904
1905 static char *
1906 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
1907 {
1908 asection *stabsect;
1909 bfd_size_type size;
1910 char *contents;
1911
1912 stabsect = bfd_get_section_by_name (abfd, sect_name);
1913 if (stabsect == NULL)
1914 {
1915 printf (_("No %s section present\n\n"), sect_name);
1916 return FALSE;
1917 }
1918
1919 size = bfd_section_size (abfd, stabsect);
1920 contents = xmalloc (size);
1921
1922 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
1923 {
1924 non_fatal (_("Reading %s section of %s failed: %s"),
1925 sect_name, bfd_get_filename (abfd),
1926 bfd_errmsg (bfd_get_error ()));
1927 free (contents);
1928 exit_status = 1;
1929 return NULL;
1930 }
1931
1932 *size_ptr = size;
1933
1934 return contents;
1935 }
1936
1937 /* Stabs entries use a 12 byte format:
1938 4 byte string table index
1939 1 byte stab type
1940 1 byte stab other field
1941 2 byte stab desc field
1942 4 byte stab value
1943 FIXME: This will have to change for a 64 bit object format. */
1944
1945 #define STRDXOFF (0)
1946 #define TYPEOFF (4)
1947 #define OTHEROFF (5)
1948 #define DESCOFF (6)
1949 #define VALOFF (8)
1950 #define STABSIZE (12)
1951
1952 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
1953 using string table section STRSECT_NAME (in `strtab'). */
1954
1955 static void
1956 print_section_stabs (bfd *abfd,
1957 const char *stabsect_name,
1958 unsigned *string_offset_ptr)
1959 {
1960 int i;
1961 unsigned file_string_table_offset = 0;
1962 unsigned next_file_string_table_offset = *string_offset_ptr;
1963 bfd_byte *stabp, *stabs_end;
1964
1965 stabp = stabs;
1966 stabs_end = stabp + stab_size;
1967
1968 printf (_("Contents of %s section:\n\n"), stabsect_name);
1969 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
1970
1971 /* Loop through all symbols and print them.
1972
1973 We start the index at -1 because there is a dummy symbol on
1974 the front of stabs-in-{coff,elf} sections that supplies sizes. */
1975 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
1976 {
1977 const char *name;
1978 unsigned long strx;
1979 unsigned char type, other;
1980 unsigned short desc;
1981 bfd_vma value;
1982
1983 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
1984 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
1985 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
1986 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
1987 value = bfd_h_get_32 (abfd, stabp + VALOFF);
1988
1989 printf ("\n%-6d ", i);
1990 /* Either print the stab name, or, if unnamed, print its number
1991 again (makes consistent formatting for tools like awk). */
1992 name = bfd_get_stab_name (type);
1993 if (name != NULL)
1994 printf ("%-6s", name);
1995 else if (type == N_UNDF)
1996 printf ("HdrSym");
1997 else
1998 printf ("%-6d", type);
1999 printf (" %-6d %-6d ", other, desc);
2000 bfd_printf_vma (abfd, value);
2001 printf (" %-6lu", strx);
2002
2003 /* Symbols with type == 0 (N_UNDF) specify the length of the
2004 string table associated with this file. We use that info
2005 to know how to relocate the *next* file's string table indices. */
2006 if (type == N_UNDF)
2007 {
2008 file_string_table_offset = next_file_string_table_offset;
2009 next_file_string_table_offset += value;
2010 }
2011 else
2012 {
2013 /* Using the (possibly updated) string table offset, print the
2014 string (if any) associated with this symbol. */
2015 if ((strx + file_string_table_offset) < stabstr_size)
2016 printf (" %s", &strtab[strx + file_string_table_offset]);
2017 else
2018 printf (" *");
2019 }
2020 }
2021 printf ("\n\n");
2022 *string_offset_ptr = next_file_string_table_offset;
2023 }
2024
2025 typedef struct
2026 {
2027 const char * section_name;
2028 const char * string_section_name;
2029 unsigned string_offset;
2030 }
2031 stab_section_names;
2032
2033 static void
2034 find_stabs_section (bfd *abfd, asection *section, void *names)
2035 {
2036 int len;
2037 stab_section_names * sought = (stab_section_names *) names;
2038
2039 /* Check for section names for which stabsect_name is a prefix, to
2040 handle .stab.N, etc. */
2041 len = strlen (sought->section_name);
2042
2043 /* If the prefix matches, and the files section name ends with a
2044 nul or a digit, then we match. I.e., we want either an exact
2045 match or a section followed by a number. */
2046 if (strncmp (sought->section_name, section->name, len) == 0
2047 && (section->name[len] == 0
2048 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2049 {
2050 if (strtab == NULL)
2051 strtab = read_section_stabs (abfd, sought->string_section_name,
2052 &stabstr_size);
2053
2054 if (strtab)
2055 {
2056 stabs = read_section_stabs (abfd, section->name, &stab_size);
2057 if (stabs)
2058 print_section_stabs (abfd, section->name, &sought->string_offset);
2059 }
2060 }
2061 }
2062
2063 static void
2064 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2065 {
2066 stab_section_names s;
2067
2068 s.section_name = stabsect_name;
2069 s.string_section_name = strsect_name;
2070 s.string_offset = 0;
2071
2072 bfd_map_over_sections (abfd, find_stabs_section, & s);
2073
2074 free (strtab);
2075 strtab = NULL;
2076 }
2077
2078 /* Dump the any sections containing stabs debugging information. */
2079
2080 static void
2081 dump_stabs (bfd *abfd)
2082 {
2083 dump_stabs_section (abfd, ".stab", ".stabstr");
2084 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2085 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2086 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2087 }
2088 \f
2089 static void
2090 dump_bfd_header (bfd *abfd)
2091 {
2092 char *comma = "";
2093
2094 printf (_("architecture: %s, "),
2095 bfd_printable_arch_mach (bfd_get_arch (abfd),
2096 bfd_get_mach (abfd)));
2097 printf (_("flags 0x%08x:\n"), abfd->flags);
2098
2099 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2100 PF (HAS_RELOC, "HAS_RELOC");
2101 PF (EXEC_P, "EXEC_P");
2102 PF (HAS_LINENO, "HAS_LINENO");
2103 PF (HAS_DEBUG, "HAS_DEBUG");
2104 PF (HAS_SYMS, "HAS_SYMS");
2105 PF (HAS_LOCALS, "HAS_LOCALS");
2106 PF (DYNAMIC, "DYNAMIC");
2107 PF (WP_TEXT, "WP_TEXT");
2108 PF (D_PAGED, "D_PAGED");
2109 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2110 PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2111 printf (_("\nstart address 0x"));
2112 bfd_printf_vma (abfd, abfd->start_address);
2113 printf ("\n");
2114 }
2115
2116 \f
2117 static void
2118 dump_bfd_private_header (bfd *abfd)
2119 {
2120 bfd_print_private_bfd_data (abfd, stdout);
2121 }
2122
2123 \f
2124 /* Display a section in hexadecimal format with associated characters.
2125 Each line prefixed by the zero padded address. */
2126
2127 static void
2128 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2129 {
2130 bfd_byte *data = 0;
2131 bfd_size_type datasize;
2132 bfd_size_type addr_offset;
2133 bfd_size_type start_offset;
2134 bfd_size_type stop_offset;
2135 unsigned int opb = bfd_octets_per_byte (abfd);
2136 /* Bytes per line. */
2137 const int onaline = 16;
2138 char buf[64];
2139 int count;
2140 int width;
2141
2142 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2143 return;
2144
2145 if (! process_section_p (section))
2146 return;
2147
2148 if ((datasize = bfd_section_size (abfd, section)) == 0)
2149 return;
2150
2151 printf (_("Contents of section %s:\n"), section->name);
2152
2153 data = xmalloc (datasize);
2154
2155 bfd_get_section_contents (abfd, section, data, 0, datasize);
2156
2157 /* Compute the address range to display. */
2158 if (start_address == (bfd_vma) -1
2159 || start_address < section->vma)
2160 start_offset = 0;
2161 else
2162 start_offset = start_address - section->vma;
2163
2164 if (stop_address == (bfd_vma) -1)
2165 stop_offset = datasize / opb;
2166 else
2167 {
2168 if (stop_address < section->vma)
2169 stop_offset = 0;
2170 else
2171 stop_offset = stop_address - section->vma;
2172
2173 if (stop_offset > datasize / opb)
2174 stop_offset = datasize / opb;
2175 }
2176
2177 width = 4;
2178
2179 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2180 if (strlen (buf) >= sizeof (buf))
2181 abort ();
2182
2183 count = 0;
2184 while (buf[count] == '0' && buf[count+1] != '\0')
2185 count++;
2186 count = strlen (buf) - count;
2187 if (count > width)
2188 width = count;
2189
2190 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2191 if (strlen (buf) >= sizeof (buf))
2192 abort ();
2193
2194 count = 0;
2195 while (buf[count] == '0' && buf[count+1] != '\0')
2196 count++;
2197 count = strlen (buf) - count;
2198 if (count > width)
2199 width = count;
2200
2201 for (addr_offset = start_offset;
2202 addr_offset < stop_offset; addr_offset += onaline / opb)
2203 {
2204 bfd_size_type j;
2205
2206 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2207 count = strlen (buf);
2208 if ((size_t) count >= sizeof (buf))
2209 abort ();
2210
2211 putchar (' ');
2212 while (count < width)
2213 {
2214 putchar ('0');
2215 count++;
2216 }
2217 fputs (buf + count - width, stdout);
2218 putchar (' ');
2219
2220 for (j = addr_offset * opb;
2221 j < addr_offset * opb + onaline; j++)
2222 {
2223 if (j < stop_offset * opb)
2224 printf ("%02x", (unsigned) (data[j]));
2225 else
2226 printf (" ");
2227 if ((j & 3) == 3)
2228 printf (" ");
2229 }
2230
2231 printf (" ");
2232 for (j = addr_offset * opb;
2233 j < addr_offset * opb + onaline; j++)
2234 {
2235 if (j >= stop_offset * opb)
2236 printf (" ");
2237 else
2238 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2239 }
2240 putchar ('\n');
2241 }
2242 free (data);
2243 }
2244
2245 /* Actually display the various requested regions. */
2246
2247 static void
2248 dump_data (bfd *abfd)
2249 {
2250 bfd_map_over_sections (abfd, dump_section, NULL);
2251 }
2252
2253 /* Should perhaps share code and display with nm? */
2254
2255 static void
2256 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2257 {
2258 asymbol **current;
2259 long max;
2260 long count;
2261
2262 if (dynamic)
2263 {
2264 current = dynsyms;
2265 max = dynsymcount;
2266 printf ("DYNAMIC SYMBOL TABLE:\n");
2267 }
2268 else
2269 {
2270 current = syms;
2271 max = symcount;
2272 printf ("SYMBOL TABLE:\n");
2273 }
2274
2275 if (max == 0)
2276 printf (_("no symbols\n"));
2277
2278 for (count = 0; count < max; count++)
2279 {
2280 bfd *cur_bfd;
2281
2282 if (*current == NULL)
2283 printf (_("no information for symbol number %ld\n"), count);
2284
2285 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2286 printf (_("could not determine the type of symbol number %ld\n"),
2287 count);
2288
2289 else if (dump_special_syms
2290 || !bfd_is_target_special_symbol (cur_bfd, *current))
2291 {
2292 const char *name = (*current)->name;
2293
2294 if (do_demangle && name != NULL && *name != '\0')
2295 {
2296 char *alloc;
2297
2298 /* If we want to demangle the name, we demangle it
2299 here, and temporarily clobber it while calling
2300 bfd_print_symbol. FIXME: This is a gross hack. */
2301 alloc = demangle (cur_bfd, name);
2302 (*current)->name = alloc;
2303 bfd_print_symbol (cur_bfd, stdout, *current,
2304 bfd_print_symbol_all);
2305 (*current)->name = name;
2306 free (alloc);
2307 }
2308 else
2309 bfd_print_symbol (cur_bfd, stdout, *current,
2310 bfd_print_symbol_all);
2311 printf ("\n");
2312 }
2313 current++;
2314 }
2315 printf ("\n\n");
2316 }
2317 \f
2318 static void
2319 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2320 {
2321 arelent **p;
2322 char *last_filename, *last_functionname;
2323 unsigned int last_line;
2324
2325 /* Get column headers lined up reasonably. */
2326 {
2327 static int width;
2328
2329 if (width == 0)
2330 {
2331 char buf[30];
2332
2333 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2334 width = strlen (buf) - 7;
2335 }
2336 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2337 }
2338
2339 last_filename = NULL;
2340 last_functionname = NULL;
2341 last_line = 0;
2342
2343 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2344 {
2345 arelent *q = *p;
2346 const char *filename, *functionname;
2347 unsigned int line;
2348 const char *sym_name;
2349 const char *section_name;
2350
2351 if (start_address != (bfd_vma) -1
2352 && q->address < start_address)
2353 continue;
2354 if (stop_address != (bfd_vma) -1
2355 && q->address > stop_address)
2356 continue;
2357
2358 if (with_line_numbers
2359 && sec != NULL
2360 && bfd_find_nearest_line (abfd, sec, syms, q->address,
2361 &filename, &functionname, &line))
2362 {
2363 if (functionname != NULL
2364 && (last_functionname == NULL
2365 || strcmp (functionname, last_functionname) != 0))
2366 {
2367 printf ("%s():\n", functionname);
2368 if (last_functionname != NULL)
2369 free (last_functionname);
2370 last_functionname = xstrdup (functionname);
2371 }
2372
2373 if (line > 0
2374 && (line != last_line
2375 || (filename != NULL
2376 && last_filename != NULL
2377 && strcmp (filename, last_filename) != 0)))
2378 {
2379 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
2380 last_line = line;
2381 if (last_filename != NULL)
2382 free (last_filename);
2383 if (filename == NULL)
2384 last_filename = NULL;
2385 else
2386 last_filename = xstrdup (filename);
2387 }
2388 }
2389
2390 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2391 {
2392 sym_name = (*(q->sym_ptr_ptr))->name;
2393 section_name = (*(q->sym_ptr_ptr))->section->name;
2394 }
2395 else
2396 {
2397 sym_name = NULL;
2398 section_name = NULL;
2399 }
2400
2401 if (sym_name)
2402 {
2403 bfd_printf_vma (abfd, q->address);
2404 if (q->howto->name)
2405 printf (" %-16s ", q->howto->name);
2406 else
2407 printf (" %-16d ", q->howto->type);
2408 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
2409 }
2410 else
2411 {
2412 if (section_name == NULL)
2413 section_name = "*unknown*";
2414 bfd_printf_vma (abfd, q->address);
2415 printf (" %-16s [%s]",
2416 q->howto->name,
2417 section_name);
2418 }
2419
2420 if (q->addend)
2421 {
2422 printf ("+0x");
2423 bfd_printf_vma (abfd, q->addend);
2424 }
2425
2426 printf ("\n");
2427 }
2428 }
2429
2430 static void
2431 dump_relocs_in_section (bfd *abfd,
2432 asection *section,
2433 void *dummy ATTRIBUTE_UNUSED)
2434 {
2435 arelent **relpp;
2436 long relcount;
2437 long relsize;
2438
2439 if ( bfd_is_abs_section (section)
2440 || bfd_is_und_section (section)
2441 || bfd_is_com_section (section)
2442 || (! process_section_p (section))
2443 || ((section->flags & SEC_RELOC) == 0))
2444 return;
2445
2446 relsize = bfd_get_reloc_upper_bound (abfd, section);
2447 if (relsize < 0)
2448 bfd_fatal (bfd_get_filename (abfd));
2449
2450 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
2451
2452 if (relsize == 0)
2453 {
2454 printf (" (none)\n\n");
2455 return;
2456 }
2457
2458 relpp = xmalloc (relsize);
2459 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
2460
2461 if (relcount < 0)
2462 bfd_fatal (bfd_get_filename (abfd));
2463 else if (relcount == 0)
2464 printf (" (none)\n\n");
2465 else
2466 {
2467 printf ("\n");
2468 dump_reloc_set (abfd, section, relpp, relcount);
2469 printf ("\n\n");
2470 }
2471 free (relpp);
2472 }
2473
2474 static void
2475 dump_relocs (bfd *abfd)
2476 {
2477 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
2478 }
2479
2480 static void
2481 dump_dynamic_relocs (bfd *abfd)
2482 {
2483 long relsize;
2484 arelent **relpp;
2485 long relcount;
2486
2487 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2488 if (relsize < 0)
2489 bfd_fatal (bfd_get_filename (abfd));
2490
2491 printf ("DYNAMIC RELOCATION RECORDS");
2492
2493 if (relsize == 0)
2494 printf (" (none)\n\n");
2495 else
2496 {
2497 relpp = xmalloc (relsize);
2498 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
2499
2500 if (relcount < 0)
2501 bfd_fatal (bfd_get_filename (abfd));
2502 else if (relcount == 0)
2503 printf (" (none)\n\n");
2504 else
2505 {
2506 printf ("\n");
2507 dump_reloc_set (abfd, NULL, relpp, relcount);
2508 printf ("\n\n");
2509 }
2510 free (relpp);
2511 }
2512 }
2513
2514 /* Creates a table of paths, to search for source files. */
2515
2516 static void
2517 add_include_path (const char *path)
2518 {
2519 if (path[0] == 0)
2520 return;
2521 include_path_count++;
2522 include_paths = xrealloc (include_paths,
2523 include_path_count * sizeof (*include_paths));
2524 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2525 if (path[1] == ':' && path[2] == 0)
2526 path = concat (path, ".", (const char *) 0);
2527 #endif
2528 include_paths[include_path_count - 1] = path;
2529 }
2530
2531 static void
2532 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
2533 asection *section,
2534 void *dummy ATTRIBUTE_UNUSED)
2535 {
2536 section->vma += adjust_section_vma;
2537 section->lma += adjust_section_vma;
2538 }
2539
2540 /* Dump selected contents of ABFD. */
2541
2542 static void
2543 dump_bfd (bfd *abfd)
2544 {
2545 /* If we are adjusting section VMA's, change them all now. Changing
2546 the BFD information is a hack. However, we must do it, or
2547 bfd_find_nearest_line will not do the right thing. */
2548 if (adjust_section_vma != 0)
2549 bfd_map_over_sections (abfd, adjust_addresses, NULL);
2550
2551 if (! dump_debugging_tags)
2552 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
2553 abfd->xvec->name);
2554 if (dump_ar_hdrs)
2555 print_arelt_descr (stdout, abfd, TRUE);
2556 if (dump_file_header)
2557 dump_bfd_header (abfd);
2558 if (dump_private_headers)
2559 dump_bfd_private_header (abfd);
2560 if (! dump_debugging_tags)
2561 putchar ('\n');
2562 if (dump_section_headers)
2563 dump_headers (abfd);
2564
2565 if (dump_symtab || dump_reloc_info || disassemble || dump_debugging)
2566 syms = slurp_symtab (abfd);
2567 if (dump_dynamic_symtab || dump_dynamic_reloc_info
2568 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
2569 dynsyms = slurp_dynamic_symtab (abfd);
2570 if (disassemble)
2571 {
2572 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
2573 dynsymcount, dynsyms, &synthsyms);
2574 if (synthcount < 0)
2575 synthcount = 0;
2576 }
2577
2578 if (dump_symtab)
2579 dump_symbols (abfd, FALSE);
2580 if (dump_dynamic_symtab)
2581 dump_symbols (abfd, TRUE);
2582 if (dump_stab_section_info)
2583 dump_stabs (abfd);
2584 if (dump_reloc_info && ! disassemble)
2585 dump_relocs (abfd);
2586 if (dump_dynamic_reloc_info && ! disassemble)
2587 dump_dynamic_relocs (abfd);
2588 if (dump_section_contents)
2589 dump_data (abfd);
2590 if (disassemble)
2591 disassemble_data (abfd);
2592
2593 if (dump_debugging)
2594 {
2595 void *dhandle;
2596
2597 dhandle = read_debugging_info (abfd, syms, symcount);
2598 if (dhandle != NULL)
2599 {
2600 if (! print_debugging_info (stdout, dhandle, abfd, syms, demangle,
2601 dump_debugging_tags ? TRUE : FALSE))
2602 {
2603 non_fatal (_("%s: printing debugging information failed"),
2604 bfd_get_filename (abfd));
2605 exit_status = 1;
2606 }
2607 }
2608 }
2609
2610 if (syms)
2611 {
2612 free (syms);
2613 syms = NULL;
2614 }
2615
2616 if (dynsyms)
2617 {
2618 free (dynsyms);
2619 dynsyms = NULL;
2620 }
2621
2622 if (synthsyms)
2623 {
2624 free (synthsyms);
2625 synthsyms = NULL;
2626 }
2627
2628 symcount = 0;
2629 dynsymcount = 0;
2630 synthcount = 0;
2631 }
2632
2633 static void
2634 display_bfd (bfd *abfd)
2635 {
2636 char **matching;
2637
2638 if (bfd_check_format_matches (abfd, bfd_object, &matching))
2639 {
2640 dump_bfd (abfd);
2641 return;
2642 }
2643
2644 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
2645 {
2646 nonfatal (bfd_get_filename (abfd));
2647 list_matching_formats (matching);
2648 free (matching);
2649 return;
2650 }
2651
2652 if (bfd_get_error () != bfd_error_file_not_recognized)
2653 {
2654 nonfatal (bfd_get_filename (abfd));
2655 return;
2656 }
2657
2658 if (bfd_check_format_matches (abfd, bfd_core, &matching))
2659 {
2660 dump_bfd (abfd);
2661 return;
2662 }
2663
2664 nonfatal (bfd_get_filename (abfd));
2665
2666 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
2667 {
2668 list_matching_formats (matching);
2669 free (matching);
2670 }
2671 }
2672
2673 static void
2674 display_file (char *filename, char *target)
2675 {
2676 bfd *file;
2677 bfd *arfile = NULL;
2678
2679 if (get_file_size (filename) < 1)
2680 return;
2681
2682 file = bfd_openr (filename, target);
2683 if (file == NULL)
2684 {
2685 nonfatal (filename);
2686 return;
2687 }
2688
2689 /* If the file is an archive, process all of its elements. */
2690 if (bfd_check_format (file, bfd_archive))
2691 {
2692 bfd *last_arfile = NULL;
2693
2694 printf (_("In archive %s:\n"), bfd_get_filename (file));
2695 for (;;)
2696 {
2697 bfd_set_error (bfd_error_no_error);
2698
2699 arfile = bfd_openr_next_archived_file (file, arfile);
2700 if (arfile == NULL)
2701 {
2702 if (bfd_get_error () != bfd_error_no_more_archived_files)
2703 nonfatal (bfd_get_filename (file));
2704 break;
2705 }
2706
2707 display_bfd (arfile);
2708
2709 if (last_arfile != NULL)
2710 bfd_close (last_arfile);
2711 last_arfile = arfile;
2712 }
2713
2714 if (last_arfile != NULL)
2715 bfd_close (last_arfile);
2716 }
2717 else
2718 display_bfd (file);
2719
2720 bfd_close (file);
2721 }
2722 \f
2723 int
2724 main (int argc, char **argv)
2725 {
2726 int c;
2727 char *target = default_target;
2728 bfd_boolean seenflag = FALSE;
2729
2730 #if defined (HAVE_SETLOCALE)
2731 #if defined (HAVE_LC_MESSAGES)
2732 setlocale (LC_MESSAGES, "");
2733 #endif
2734 setlocale (LC_CTYPE, "");
2735 #endif
2736
2737 bindtextdomain (PACKAGE, LOCALEDIR);
2738 textdomain (PACKAGE);
2739
2740 program_name = *argv;
2741 xmalloc_set_program_name (program_name);
2742
2743 START_PROGRESS (program_name, 0);
2744
2745 bfd_init ();
2746 set_default_bfd_target ();
2747
2748 while ((c = getopt_long (argc, argv, "pib:m:M:VvCdDlfaHhrRtTxsSI:j:wE:zgeG",
2749 long_options, (int *) 0))
2750 != EOF)
2751 {
2752 switch (c)
2753 {
2754 case 0:
2755 break; /* We've been given a long option. */
2756 case 'm':
2757 machine = optarg;
2758 break;
2759 case 'M':
2760 if (disassembler_options)
2761 /* Ignore potential memory leak for now. */
2762 disassembler_options = concat (disassembler_options, ",",
2763 optarg, NULL);
2764 else
2765 disassembler_options = optarg;
2766 break;
2767 case 'j':
2768 if (only_used == only_size)
2769 {
2770 only_size += 8;
2771 only = xrealloc (only, only_size * sizeof (char *));
2772 }
2773 only [only_used++] = optarg;
2774 break;
2775 case 'l':
2776 with_line_numbers = TRUE;
2777 break;
2778 case 'b':
2779 target = optarg;
2780 break;
2781 case 'C':
2782 do_demangle = TRUE;
2783 if (optarg != NULL)
2784 {
2785 enum demangling_styles style;
2786
2787 style = cplus_demangle_name_to_style (optarg);
2788 if (style == unknown_demangling)
2789 fatal (_("unknown demangling style `%s'"),
2790 optarg);
2791
2792 cplus_demangle_set_style (style);
2793 }
2794 break;
2795 case 'w':
2796 wide_output = TRUE;
2797 break;
2798 case OPTION_ADJUST_VMA:
2799 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
2800 break;
2801 case OPTION_START_ADDRESS:
2802 start_address = parse_vma (optarg, "--start-address");
2803 break;
2804 case OPTION_STOP_ADDRESS:
2805 stop_address = parse_vma (optarg, "--stop-address");
2806 break;
2807 case 'E':
2808 if (strcmp (optarg, "B") == 0)
2809 endian = BFD_ENDIAN_BIG;
2810 else if (strcmp (optarg, "L") == 0)
2811 endian = BFD_ENDIAN_LITTLE;
2812 else
2813 {
2814 non_fatal (_("unrecognized -E option"));
2815 usage (stderr, 1);
2816 }
2817 break;
2818 case OPTION_ENDIAN:
2819 if (strncmp (optarg, "big", strlen (optarg)) == 0)
2820 endian = BFD_ENDIAN_BIG;
2821 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
2822 endian = BFD_ENDIAN_LITTLE;
2823 else
2824 {
2825 non_fatal (_("unrecognized --endian type `%s'"), optarg);
2826 usage (stderr, 1);
2827 }
2828 break;
2829
2830 case 'f':
2831 dump_file_header = TRUE;
2832 seenflag = TRUE;
2833 break;
2834 case 'i':
2835 formats_info = TRUE;
2836 seenflag = TRUE;
2837 break;
2838 case 'I':
2839 add_include_path (optarg);
2840 break;
2841 case 'p':
2842 dump_private_headers = TRUE;
2843 seenflag = TRUE;
2844 break;
2845 case 'x':
2846 dump_private_headers = TRUE;
2847 dump_symtab = TRUE;
2848 dump_reloc_info = TRUE;
2849 dump_file_header = TRUE;
2850 dump_ar_hdrs = TRUE;
2851 dump_section_headers = TRUE;
2852 seenflag = TRUE;
2853 break;
2854 case 't':
2855 dump_symtab = TRUE;
2856 seenflag = TRUE;
2857 break;
2858 case 'T':
2859 dump_dynamic_symtab = TRUE;
2860 seenflag = TRUE;
2861 break;
2862 case 'd':
2863 disassemble = TRUE;
2864 seenflag = TRUE;
2865 break;
2866 case 'z':
2867 disassemble_zeroes = TRUE;
2868 break;
2869 case 'D':
2870 disassemble = TRUE;
2871 disassemble_all = TRUE;
2872 seenflag = TRUE;
2873 break;
2874 case 'S':
2875 disassemble = TRUE;
2876 with_source_code = TRUE;
2877 seenflag = TRUE;
2878 break;
2879 case 'g':
2880 dump_debugging = 1;
2881 seenflag = TRUE;
2882 break;
2883 case 'e':
2884 dump_debugging = 1;
2885 dump_debugging_tags = 1;
2886 do_demangle = TRUE;
2887 seenflag = TRUE;
2888 break;
2889 case 'G':
2890 dump_stab_section_info = TRUE;
2891 seenflag = TRUE;
2892 break;
2893 case 's':
2894 dump_section_contents = TRUE;
2895 seenflag = TRUE;
2896 break;
2897 case 'r':
2898 dump_reloc_info = TRUE;
2899 seenflag = TRUE;
2900 break;
2901 case 'R':
2902 dump_dynamic_reloc_info = TRUE;
2903 seenflag = TRUE;
2904 break;
2905 case 'a':
2906 dump_ar_hdrs = TRUE;
2907 seenflag = TRUE;
2908 break;
2909 case 'h':
2910 dump_section_headers = TRUE;
2911 seenflag = TRUE;
2912 break;
2913 case 'H':
2914 usage (stdout, 0);
2915 seenflag = TRUE;
2916 case 'v':
2917 case 'V':
2918 show_version = TRUE;
2919 seenflag = TRUE;
2920 break;
2921
2922 default:
2923 usage (stderr, 1);
2924 }
2925 }
2926
2927 if (show_version)
2928 print_version ("objdump");
2929
2930 if (!seenflag)
2931 usage (stderr, 2);
2932
2933 if (formats_info)
2934 exit_status = display_info ();
2935 else
2936 {
2937 if (optind == argc)
2938 display_file ("a.out", target);
2939 else
2940 for (; optind < argc;)
2941 display_file (argv[optind++], target);
2942 }
2943
2944 END_PROGRESS (program_name);
2945
2946 return exit_status;
2947 }